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Quarterly Results of Operations (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Summary of the unaudited quarterly results of operations | The following table sets forth a summary of the unaudited quarterly results of operations.
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2018 |  |  |  |  |  |  |
Interest income | $ | 100,380 |  |  | $ | 106,574 |  |  | $ | 117,795 |  |  | $ | 137,105 |
Interest expense | 11,140 |  |  | 14,185 |  |  | 18,356 |  |  | 21,648 |
Net interest income | 89,240 |  |  | 92,389 |  |  | 99,439 |  |  | 115,457 |
Provision for loan losses | 1,750 |  |  | 1,810 |  |  | 2,250 |  |  | 1,000 |
Noninterest income | 33,953 |  |  | 35,581 |  |  | 38,053 |  |  | 36,374 |
Noninterest expense | 77,944 |  |  | 79,026 |  |  | 94,746 |  |  | 93,313 |
Income before income taxes | 43,499 |  |  | 47,134 |  |  | 40,496 |  |  | 57,518 |
Income taxes | 9,673 |  |  | 10,424 |  |  | 8,532 |  |  | 13,098 |
Net income | $ | 33,826 |  |  | $ | 36,710 |  |  | $ | 31,964 |  |  | $ | 44,420 |
Basic earnings per share | $ | 0.69 |  |  | $ | 0.74 |  |  | $ | 0.61 |  |  | $ | 0.76 |
Diluted earnings per share | $ | 0.68 |  |  | $ | 0.74 |  |  | $ | 0.61 |  |  | $ | 0.76 |
2017 |  |  |  |  |  |  |
Interest income | $ | 81,889 |  |  | $ | 87,579 |  |  | $ | 100,695 |  |  | $ | 104,587 |
Interest expense | 7,874 |  |  | 7,976 |  |  | 10,678 |  |  | 11,325 |
Net interest income | 74,015 |  |  | 79,603 |  |  | 90,017 |  |  | 93,262 |
Provision for loan losses | 1,500 |  |  | 1,750 |  |  | 2,150 |  |  | 2,150 |
Noninterest income | 32,021 |  |  | 34,265 |  |  | 33,413 |  |  | 32,441 |
Noninterest expense | 69,309 |  |  | 74,841 |  |  | 80,660 |  |  | 76,808 |
Income before income taxes | 35,227 |  |  | 37,277 |  |  | 40,620 |  |  | 46,745 |
Income taxes | 11,255 |  |  | 11,993 |  |  | 14,199 |  |  | 30,234 |
Net income | $ | 23,972 |  |  | $ | 25,284 |  |  | $ | 26,421 |  |  | $ | 16,511 |
Basic earnings per share | $ | 0.54 |  |  | $ | 0.57 |  |  | $ | 0.54 |  |  | $ | 0.33 |
Diluted earnings per share | $ | 0.54 |  |  | $ | 0.57 |  |  | $ | 0.53 |  |  | $ | 0.33 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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